Millstone.



No. 802,396. PATENTED OCT. 24, 1905. J. D. I IOUUK.

MILLSTONE.

APPLICATION FILED APR. 20, 1905.

UNITED STATES PATENT OFFICE. JOHN D. HOUOK, 67F ontrnw issl, PENNSYLVANIA.

MILLSTONE.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed Apr1'l28, 1905. $erial No. 257,907-

To all whom it may concern:

Be it known that 1, JOHN D. HonoK, a citizen of the United States, residing at Catawissa, in the county of Columbia and State of Pennsylvania, have invented new and useful Improvements in Millstones, of which the following is a specification.

My invention relates to a millstone, and more particularly the eye thereof.

The object of the invention is to provide means for preventing clogging of grain in the eye.

The invention comprises a false eye fitting in the ordinary eye of the millstone, said false eye embodying certain novel features of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical sectional view showing the application of the invention. Fig. 2 is a plan view. Fig. 3 is a perspective view of the false eye removed from the stone.

Referring specifically to the drawings, 6 denotes the upper stone, and 7 the lower stone; 8, the halance-rynd, which is secured in the eye 9 of the upper stone as usual and receives the point of the spindle 10. The eye is fitted with a false eye through which the grain is fed to the stone, said false eye comprising a frusto-conical tube 11, fitted large end down in the eye. The tube is slotted on opposite sides, as at 12, to straddle the rynd, and is held in place by frictional contact of its lower and wider end with the wall of the eye. A

funnel 13 conveys the grain to the false eye.

The clogging of grain in the eye of a millstone appears to be due to the following causes: When the grain drops down on the revolving rynd, it is knocked over against the wall of the eye, where it is held by the centrifugal force given by the revolving stone. When the accumulation of grain on the wall of the eye becomes too heavy, it drops down and chokes the stone. This trouble is entirely overcome by the use of the false eye, the overhanging or inclined walls of which prevent the grain from clogging and cause it to feed regularly and evenly, and the stone can also be run faster. If the stone becomes hot and needs the unobstructed eye as an air-chamber, the false eye can be readily taken out, as it is not fixed. When the stone has cooled, the false eye is replaced. No special millstone construction is required, and the invention can be readily fitted in the eye of any ordinary stone.

Having thus described my invention, what is claimed as new, and desired to be secured by Letters Patent, is-

The combination with a millstone having a balance-rynd in the eyethereof, of a frusto conical tube fitting in the eye and slotted on opposite sides to straddle the rynd the lower and wider end of the tube extending to the wall of the eye in frictional contact therewith.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN D. HOUCK. l/Vitnesses:

A. L. RINARD, N. N. WASTINE. 

